Question

What is the efficiency of a device that gives you 10 units of useful energy for every 100 units you put in it?

A. 1
B. 0.5 What is the efficiency of a device that gives you 10 units of useful energy for every 100 units you put in it?
A. 1
B. 0.5

Answer 1

Answer: 0.1

Step-by-step explanation:

i have this question and it’s the only answer not listed.

Answer 2

Efficiency = (useful output) / (input). For this device, it's 0.1 or 10%. The correct answer isn't listed as one of the choices.